71969153 has 2 divisors, whose sum is σ = 71969154. Its totient is φ = 71969152.

The previous prime is 71969141. The next prime is 71969171. The reversal of 71969153 is 35196917.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69089344 + 2879809 = 8312^2 + 1697^2 .

It is a cyclic number.

It is not a de Polignac number, because 71969153 - 2⁴ = 71969137 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71969153.

It is not a weakly prime, because it can be changed into another prime (71969113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35984576 + 35984577.

It is an arithmetic number, because the mean of its divisors is an integer number (35984577).

Almost surely, 2^71969153 is an apocalyptic number.

It is an amenable number.

71969153 is a deficient number, since it is larger than the sum of its proper divisors (1).

71969153 is an equidigital number, since it uses as much as digits as its factorization.

71969153 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51030, while the sum is 41.

The square root of 71969153 is about 8483.4635026032. The cubic root of 71969153 is about 415.9573446926.

The spelling of 71969153 in words is "seventy-one million, nine hundred sixty-nine thousand, one hundred fifty-three".